Internal-combustion engine.



A. F. MASURY.

INYERNAL CUMBUSTION {NGlNl-.

APPLncAlon man SEPT. 1. 1917.

"Patented Nov. 2% 1917.

/N VEN TOR mi( UNITED STATES PATENT OFFICE.

ALFRED F. MASURY, OF NEW YORK, `N. Y., ASSIGNOR TO INTERNATIONAL MOTOR COMPANY, 0F NEW YORK. N. Y., A CORPORATION 0F DELAWARE.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Nov. 27, 1917.

Application led'September 1, 1917. Serial No. 189,300.

`To of whom t may concern.'

Be it known that I, ALFRED F. MASURY, a citizen of the United States, residing in the borough of Manhattan of the city of New .York, in the State of New York, have inl, located the cam shaft, above the engine head,

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and this oil therefore becomes quite highly heated, reducing t0 some extent its lubricating quality. It is the particular purpose of this invention to provide for the coolino' of the oil as it returns from the cani siaft chamber to the crank shaft chamber and incidentally for the transfer of heat from the oil to the fuel mixture'in the inlet manifold, and also to provide for the delivery of the oil to bearings of the cam shaft and its cams before it has become highly heated in the cam shaft chamber. The invention will be more fully explained hereinafter with reference to theaccompanying drawing in which it is illustrated. and in which- Figure 1 is a View in side elevation of an internal combustion engine to which the present improvement is applied, some parts Fig. 2 is a View in transverse section on 'the plane indicated by the broken line 2-2 of Fig.` 1 looking in the direction of the aII'OV.

The enginechosen for illustration of the application of the invention is a four-cylinder engine of ordinary construction, except as hereinafter indicated, with a crank shaft a, a crank casing b and a block c of cylinders` one of which is shown in section at c in Fig. 2. The positions of the usual valves of the valve-in-head motor are indicated at The valves and their immediate actuating parts, whichy may be of any usual or suitable construction, are not shown, but the cam shaft by which the valves are actuated shown at e. The valve stems, the actuating parts and the cam shaft e, are inclosed within a casing f, in the ends of which the cam shaft has its bearings at e and e2. The cam shaft is hollow, as indicated at e3, and is provided with apertures, as indicated hy dotted lines at e4, through which the oil, which is delivered to the bore of the cam shaft. is fed to the working surfaces of cams c, Oil is delivered from the usual oil pump, shown in dotted lines at a in Fig. l, through a suitable oil pipe a2, to a stuffing box e formed in the bearing e2, and passes thence into the bore of the cam shaft. The oil which escapes from the crank shaft into the chamber f formed by the casing f, finds its way from the lowest part of the chamber f through a channel g formed in the cylinder head f/ to a jacket t which surrounds the inlet manifold z' and is conducted thence by gravbity through a pipe k to the crank chamber The oil jacket which surrounds the inlet manifold has sufficient capacity to hold a considerable quantity of oil in a compara tively thin sheet, so that the oil, heated in its passage through the cam shaft e and the chamber f. gives up much of its heat through the Wall of the inlet manifold z' to the inflowing fuel mixture. The lubricating quality of the oil is increased by the cooling Which it thus receives and the efficiency of the fuel mixture is likewise increased by the heat absorbcd.

I claim as my invention:

1. In an internal combustion engine, the combination of a crank case, a cylinder block, a cylinder head provided wlth the usual valves, a cam shaft, a casing inclosing the cam shaft and the valves, an inlet manifold, an oil jacket surrounding the inlet manifold, means to deliver oil from the crank casing to the cam shaft casing and means to conduct the oil from the cam shaft casing to the oil jacket about the inlet manifold and thence to the crank casing.

2. In an internal combustion engine, the combination of a crank case, a cylinder block,

a cylinder head provided with the -usual cam shaft and means to conduct the oil from valves, a cam shaft, the cam shaft being holthe cam shaft casing to the oil jacket about low and provided with outlet apertures, a the inlet manifold and thence to the crank 10 casing inclosing the cam shaft and the casing.

valves, an inlet manifold, an oil jacket sur- This specification signed this 30th day of rounding the inlet manifold, means to de- August, A. D. 1917.

liver oil from the crank casing to the hollow ALFRED F. MASURY. 

